Online stopwatch, large display makes it perfect for classrooms, presentations, and large audiences. There's nothing to download and it runs in the background, so you don't have to start over if you a...More: lessons, discussions, ratings, reviews,...

This module is designed to remind learners how to measure and find the area of a rectangle, using factsheets, worksheets, a quiz at multiple levels of difficulty, and a brief video applying these idea...More: lessons, discussions, ratings, reviews,...

The Calculating Time module introduces adding and subtracting times in hours and minutes, converting between hours and minutes, and working out journey times, and includes some reading of 24 hour cloc...More: lessons, discussions, ratings, reviews,...

This module is about reading, estimating, measuring and comparing distances, using factsheets, worksheets, and a quiz at three levels of difficulty. Find more resources on the web in the section "For ...More: lessons, discussions, ratings, reviews,...

Virtual manipulative for teaching various concepts in telling time. Features of this multi-faceted tool include the ability to change the clock's face (two different primary faces, Roman numerals, 12-...More: lessons, discussions, ratings, reviews,...

The applet is designed to teach students four distinct facts about Mars, each dealing with a different topic. Each fact teaches a difference between Earth and Mars. The goal is not that students will ...More: lessons, discussions, ratings, reviews,...

This module is about finding out how to work out the perimeter of irregular shapes, using factsheets, worksheets, and a quiz at three levels of difficulty. Find related resources for further explorati...More: lessons, discussions, ratings, reviews,...

The aim of this module is to introduce telling time in reading clocks and differing date formats, through the use of factsheets, worksheets, a quiz at multiple levels of difficulty, and a game. Find a...More: lessons, discussions, ratings, reviews,...

The Temperature module covers how to read and estimate temperature using a thermometer, and understanding Celcius and Farenheit with particular emphasis on Celcius (the standard in the UK), using fact...More: lessons, discussions, ratings, reviews,...

This tool allows the user to add square boxes to the "table" adding one unit to the area of the larger box. The tool will also calculate the perimeter for the user upon pressing the "show perimeter...More: lessons, discussions, ratings, reviews,...

This material is based upon work supported by the
National Science Foundation under Grant DUE-0226284.
Any opinions, findings, and conclusions or recommendations
expressed in this material are those of the author(s)
and do not necessarily reflect the views of the
National Science Foundation.